Pith Number

pith:AHXFL55N

pith:2019:AHXFL55NGYXUEVRUPYA4FQISID

not attested not anchored not stored refs pending

A characterisation of Baer subplanes

S.G. Barwick, Wen-Ai Jackson

arxiv:1906.04318 v1 · 2019-06-04 · math.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AHXFL55NGYXUEVRUPYA4FQISID}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-17T23:43:39.661004Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

01ee55f7ad362f4256347e01c2c11240ef065ab01bb200facc372169470c7d01

Aliases

arxiv: 1906.04318 · arxiv_version: 1906.04318v1 · doi: 10.48550/arxiv.1906.04318 · pith_short_12: AHXFL55NGYXU · pith_short_16: AHXFL55NGYXUEVRU · pith_short_8: AHXFL55N

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/AHXFL55NGYXUEVRUPYA4FQISID \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 01ee55f7ad362f4256347e01c2c11240ef065ab01bb200facc372169470c7d01

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "84f9b3d80926b11223998a72efba8e1ba9924ef247d57c84d50b203ef14aa2b2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-06-04T00:54:42Z",
    "title_canon_sha256": "def4b8ee39ffe05b3f8a0cf99c0dd2eeebd7cf25c3332488301a969d53d6184f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.04318",
    "kind": "arxiv",
    "version": 1
  }
}